Legal claims defining the scope of protection. Each claim is shown in both the original legal language and a plain English translation.
1. A method, comprising: in a signal processing circuit: determining, for each of a plurality of downconverted signals, one or more frequency offsets that are associated with one or more corresponding local oscillators (LOs) used in obtaining the plurality of downconverted signals, the determining performed in relation to corresponding standard LO frequencies; generating, for the plurality of downconverted signals, information relating to the determined frequency offsets; and performing, based on the generated information, one or both of a band stacking operation and a channel stacking operation so that: during the band stacking operation, frequency bands are not stacked on each other or stacked frequency bands do not overlap; and during the channel stacking operation, channels are not stacked on each other or stacked channels do not overlap during the channel stacking operation.
A method for preventing frequency overlap in stacked signals. A signal processing circuit determines frequency offsets for multiple downconverted signals. These signals were created using local oscillators (LOs), and the offsets are determined relative to standard LO frequencies. The circuit generates information about these frequency offsets and then performs either band stacking or channel stacking. During band stacking, the system ensures that frequency bands don't overlap. Similarly, during channel stacking, it prevents channels from overlapping. This ensures proper signal separation.
2. The method according to claim 1 , comprising performing, based on the generated information, frequency corrections, in compliance with standard band frequencies and standard channel frequencies, on output signals of the band stacking operation or output signals of the channel stacking operation, for channel tuning in a gateway.
The method described previously, where frequency offsets are determined and band/channel stacking is performed, also includes frequency corrections applied after the stacking operation. These corrections align the output signals with standard band and channel frequencies, enabling accurate channel tuning within a gateway. This correction is based on the generated frequency offset information.
3. The method according to claim 1 , comprising downconverting a plurality of radio frequency (RF) signals to the plurality of downconverted signals correspondingly, wherein each of the RF signals corresponds to one or more satellite frequency bands, and the downconverted signals comprises L-band signals or baseband signals.
The method described previously, where frequency offsets are determined and band/channel stacking is performed, also involves downconverting multiple radio frequency (RF) signals, each corresponding to satellite frequency bands, into the downconverted signals. These downconverted signals are either L-band signals or baseband signals. This indicates the type of signal being processed by the system.
4. The method according to claim 1 , comprising performing the analyzing, the determining, and the generating, using a frequency detection module in the signal processing circuit.
The method described previously, where frequency offsets are determined and band/channel stacking is performed, uses a frequency detection module within the signal processing circuit to perform the analysis, frequency offset determination, and information generation. This centralizes the frequency-related computations within a dedicated module.
5. The method according to claim 4 , wherein the frequency detection module comprises a demodulator.
The frequency detection module, used to determine frequency offsets and generate related information as previously described, includes a demodulator. This demodulator aids in extracting frequency information from the downconverted signals.
6. The method according to claim 4 , wherein the frequency detection module comprises at least a portion of a demodulator, and the at least a portion of the demodulator comprises a phase locked loop (PLL).
The frequency detection module, used to determine frequency offsets and generate related information as previously described, includes at least a portion of a demodulator, specifically a phase-locked loop (PLL). This PLL component helps in accurately tracking and measuring frequency variations within the signals.
7. The method according to claim 4 , wherein: the plurality of downconverted signals are in digital domain and the frequency detection module is operational in the digital domain; and the frequency detection module performs the analyzing using one or more of the following: a fast Fourier transform (FFT), an edge detection and a center-of-mass computation.
In the previously described method where frequency offsets are determined using a frequency detection module, the downconverted signals are in the digital domain. The frequency detection module operates in the digital domain and analyzes the signals using techniques like Fast Fourier Transform (FFT), edge detection, or center-of-mass computation. These techniques are used to identify frequency characteristics within the digital signals.
8. The method according to claim 7 , wherein the frequency detection module determines, based on the edge detection, a symbol rate associated with each channel for channel filtering in the band/channel stacking module, during at least the channel stacking operation.
Building on the digital frequency detection method, the frequency detection module uses edge detection to determine the symbol rate associated with each channel. This symbol rate information is used for channel filtering in the band/channel stacking module, particularly during channel stacking. This improves the accuracy of channel separation.
9. The method according to claim 1 , wherein each of the local oscillators (LOs) comprises a dielectric resonant oscillator (DRO).
In the method of determining frequency offsets and performing band/channel stacking, each local oscillator (LO) is a dielectric resonant oscillator (DRO). This specifies the type of oscillator used to generate the LO signals used in the downconversion process.
10. The method according to claim 1 , wherein the generated information comprises a matrix comprising one or more elements, and each of the one or more elements of the matrix corresponds to a particular frequency offset associated with a particular local oscillator (LO).
The information generated about the frequency offsets is structured as a matrix. Each element in this matrix represents a specific frequency offset associated with a particular local oscillator (LO). This structured format allows for organized storage and processing of the frequency offset data.
11. A system, comprising: a signal processing circuit that is operable to: determine, for each of a plurality of downconverted signals, one or more frequency offsets that are associated with one or more corresponding local oscillators (LOs) used in obtaining the plurality of downconverted signals, the determination performed in relation to corresponding standard LO frequencies; generate, for the plurality of downconverted signals, information relating to the determined frequency offsets; and perform, based on the generated information, one or both of a band stacking operation and a channel stacking operation so that: during the band stacking operation, frequency bands are not stacked on each other or stacked frequency bands do not overlap; and during the channel stacking operation, channels are not stacked on each other or stacked channels do not overlap during the channel stacking operation.
A system designed to prevent frequency overlap in stacked signals. It contains a signal processing circuit that determines frequency offsets for multiple downconverted signals, which were created using local oscillators (LOs) and are determined relative to standard LO frequencies. The circuit generates information about these offsets and then performs either band stacking or channel stacking. During band stacking, the system ensures that frequency bands don't overlap. Similarly, during channel stacking, it prevents channels from overlapping, thereby ensuring proper signal separation.
12. The system according to claim 11 , wherein the signal processing circuit is operable to perform, based on the generated information, frequency corrections, in compliance with standard band frequencies and standard channel frequencies, on output signals of the band stacking operation or output signals of the channel stacking operation, for channel tuning in a gateway.
The system previously described, for determining frequency offsets and performing band/channel stacking, also includes frequency corrections applied after the stacking operation. These corrections align the output signals with standard band and channel frequencies, enabling accurate channel tuning within a gateway. This correction is based on the generated frequency offset information.
13. The system according to claim 11 , wherein the signal processing circuit is operable to downconvert a plurality of radio frequency (RF) signals to the plurality of downconverted signals correspondingly, and each of the RF signals corresponds to one or more satellite frequency bands, and the downconverted signals comprises L-band signals or baseband signals.
The system previously described, for determining frequency offsets and performing band/channel stacking, also involves the signal processing circuit downconverting multiple radio frequency (RF) signals, each corresponding to satellite frequency bands, into the downconverted signals. These downconverted signals are either L-band signals or baseband signals, indicating the type of signal processed.
14. The system according to claim 11 , wherein the signal processing circuit is operable to perform the analyzing, the determining, and the generating, using a frequency detection module in the signal processing circuit.
The system previously described, for determining frequency offsets and performing band/channel stacking, uses a frequency detection module within the signal processing circuit to perform the analysis, frequency offset determination, and information generation. This centralizes the frequency-related computations within a dedicated module.
15. The system according to claim 14 , wherein the frequency detection module comprises a demodulator.
The frequency detection module within the system, used to determine frequency offsets and generate related information as previously described, includes a demodulator. This demodulator aids in extracting frequency information from the downconverted signals.
16. The system according to claim 14 , wherein the frequency detection module comprises at least a portion of a demodulator, and the at least a portion of the demodulator comprises a phase locked loop (PLL).
A system for signal processing includes a frequency detection module that identifies frequency components in an input signal. The module incorporates at least part of a demodulator, which contains a phase-locked loop (PLL) to track and lock onto the signal's frequency. The PLL synchronizes with the input signal, allowing precise frequency detection and demodulation. This design enhances accuracy in frequency analysis and signal extraction, particularly in applications requiring real-time processing. The system may be used in communication devices, radar systems, or other fields where signal frequency must be determined with high precision. The PLL-based approach ensures robust performance even in noisy environments, improving reliability in frequency detection tasks. The integration of the demodulator portion with the PLL optimizes the system's efficiency by reducing component redundancy and improving signal processing speed. This configuration is particularly useful in applications where compact, high-performance frequency detection is required.
17. The system according to claim 14 , wherein: the plurality of downconverted signals are in digital domain and the frequency detection module is operational in the digital domain; and the frequency detection module performs the analyzing using one or more of the following: a fast Fourier transform (FFT), an edge detection and a center-of-mass computation.
In the previously described system where frequency offsets are determined using a frequency detection module, the downconverted signals are in the digital domain. The frequency detection module operates in the digital domain and analyzes the signals using techniques like Fast Fourier Transform (FFT), edge detection, or center-of-mass computation to identify frequency characteristics.
18. The system according to claim 17 , wherein the frequency detection module determines, based on the edge detection, a symbol rate associated with each channel for channel filtering in the band/channel stacking module, during at least the channel stacking operation.
Building on the digital frequency detection method in the system, the frequency detection module uses edge detection to determine the symbol rate associated with each channel. This symbol rate information is used for channel filtering in the band/channel stacking module, particularly during channel stacking, improving the accuracy of channel separation.
19. The system according to claim 11 , wherein each of the local oscillators (LOs) comprises a dielectric resonant oscillator (DRO).
In the system for determining frequency offsets and performing band/channel stacking, each local oscillator (LO) is a dielectric resonant oscillator (DRO). This specifies the type of oscillator used to generate the LO signals used in the downconversion process.
20. The system according to claim 11 , wherein the generated information comprises a matrix comprising at least one or more elements, and each of the one or more elements of the matrix corresponds to a particular frequency offset associated with a particular local oscillator (LO).
The information generated about the frequency offsets in the system is structured as a matrix. Each element in this matrix represents a specific frequency offset associated with a particular local oscillator (LO). This structured format allows for organized storage and processing of the frequency offset data.
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September 5, 2017
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